more ksh job control diffs; file name recognition for micrognuemacs

[Charles Hedrick]

1) I have yet another set of diffs to ksh to fix problems in job
control.  These have survived a couple of weeks of usage.  Due to
the past history, where I keep posting new versions of a diff file
that is fairly long, I've decided simply to announce it and send it
by mail to people who are interested.  After a couple of months of
usage without problems, I'll probably post it.

2) I have added file name completion to mg (micrognu) 2a.  I also made
? list all available completions for file names, buffer names, and
function names.  (Mg originally had completion for buffer names and
function names, but did not respond to ?.)  I've sent the code to the
mg maintainers.  THe current version is specific to System V.  I'd
be happy to mail it to anyone who is interested.

This code is all known to work on Microport SV/AT.  The job control
seems to work on a 3B2 running SVr3 to the extent that sxt's work
there at all (i.e. on the console, but not on TCP network ports).
Presumably it will work on any SVr2 or SVr3 that is configured to use
sxt's.  (In general if shl works, this should work.  However if your
system has both sxt's and vsxt's, you'll have to modify the code to
look at both.)  The mg patches should work on any SV release.